Loom-dobby.



No. 683,398. Patented Sept. 24, l90l. J. HIGHTON.

LUOM BOBBY.

(Application filed Mar. 5, 1901.)

3 Sheets-Sheet I.

(No Model.)

INVENTOR WITNESS ES.

hair .ltiorzw J --mern m: NORRIS versus co. momuwa. WASHINGTON. DV 1:,

' No. 683,398. Patantad Sept. 24, um

J. HIGHTON.

LOOM DOBBY. 1

(Application filed Mar. 6, 1901.)

(No Model.) 3 Sheets-Sheet 2.

WITNESSES. INVENTOR.

I k Jhyki'on TN: Nonms versus 00., PHOYOLIYHQ, wnsumamn, n. c.

J. HIGHTON.

LOUM BOBBY.

(Application filed Mar. 5, 1 901.| (No llodelJ 3 Sheets-8heat 3i Patented Sept. 24, I901.

WITNESS-ESL e UNITED STATES PATENT GFFICE.

JOSEPH HIGI'ITON, OF MANcriEs'TEPL, ENGLAND.

Loom-BOBBY.

srncrrrcritrron easin part 6r Letters Patent No. 683,398, sated se tnibe'r 24, 1901; 7 Application filed March 5, 1901. Serial No. 49,850.- (No model.)

To-all whom it may concern:

Be it known that I, JOSEPH HIGHTON, weaving overlooker, a subject of the King of Great Britain and Ireland, and a resident of 111 Gill street, Blackley, Manchester, in the county of Lancaster, England, have invented certain new and useful Improvements in and Relating to Loom-Dobbies, (for which I have made application in Great Britain, No. 13,01l,dated July 19, 1900,) of which the following is a specification.

My said invention has reference to improvementsin dobbies employed in looms for weaving for the purpose of lifting the healds for shedding the warps, as is well understood.

The invention relates to an improved method of positively or directly actuating the hooks from the barrels, pattern-chains, or the like, so as to dispense with the use of feelers or needles for raising such hooks.

The invention also relates to an improved form of hearing or connection for connecting or securing together the hooks and balks,

' such improved form of bearing or connection being applicable for securing together the balks and jacks, and it might be the jacks and healds.

My said invention will be clearly understood from the following detailed description, throughout which reference will be made to the annexed three'sheets ofdrawings.

In the said drawings, on Sheet 1, Figure 1 shows in side elevation my improved means for positively or directly actuating the hooks, so much of a dobby-framing and working parts being'indicated as is necessary for a clear understanding of my invention. Fig.

1 is a separate view of one of the brackets which guide the barrels-as they rise and fall. On Sheet 2, Fig. 2 is an end elevation of Fig. 1 with certain of the'parts broken away or omitted for the sake of clearness. Fig. 2 shows a side view of the ordinary notched wheel and pawl usedfor rotatingthe barrel or cylinder. On Sheet 3, Fig. 3 shows a side elevation of my improved connecting balk,

with attached hooks connected to the balk in accordance with my improvements. The figure also shows a jack-lever in connection with a balk. Fig.4 is an edge view of the balk. Fig. 5 is a vertical section of the bearing formed in the upper arm of the jack-lever to receive the balk. Fig. 6 is an end view of one of the hooks. Fig. -7shows one of the hooks in plan view;

Under the first part of my invention Iemploy the usual griif-knives for actuating the hooks; but these hooks are raised directly from the pattern barrels or cylinders, so as to dispense with the usual feelers or needles.

In an arrangement for carrying my invention into efiect and as clearly shown in Figs. 1 and 2 of the drawings I mount the barrels or cylinders a at below the sets of hooks b b upon levers'or links 0 0. These levers or links 0 c are jointed or connected by pivotstu'ds d d to a pivoted lever e, centered at 6. It will be clearly understood that this arrangement of levers and links is duplicated, so as to support the pattern barrels or cylinders at either end. (See Fig. 2.) In order to raise and lower the. pattern-barrels a a into and out of position for actuating the hooks b b, I arrange to vibrate the pivoted levers c. This may be conveniently efiected by means of an adjustable connecting-rod f, which is connected by swivel-joints f f to the pivoted-levers e and to the compound lever g, pivoted at g. This compound lever is of the usual type and is operated in the usual manner from the cam or tappet shaft or the like of the loom. A suitable length of chain his passed around chain-wheels h h, mounted on the axles of the pattern barrels or cylinders, and in itscourse bears on each end of the pivoted leyer e, which is provided with .antifriction-bowls k upon which the chain rests, as clearly shown in the drawings. The vibration of the compound lever g actuates the connecting-rods f, so that these rods When the levers e and links '0 tend to assume a straight line, as shown in dotted lines,

cated at c,) or the like carried by the pattern barrel or cylinder and are operated in the ordinary manner by the reciprocating griffk'nives. To guide the pattern barrels or cylinders in their upward or downward move ment, slotted or forked brackets a may be employed. Fig. 1 shows ase'parate view of such a bracket. Fig. 1 shows the hook I) as when raised ready for operation by the usual reciprocating griif-knife la. The hooks bb when worked by the knives 7c act on the connected balk Z and jack-levers m and operate the same to actuate the healds in the well-known manner. The barrels at a are rotated by means of the usual notched or ratchet wheel t', worked by the pawl z" from the compound lever g. I have indicated this notched wheel and pawl in Fig. 2 In the case of wide looms the jacks m in one set may be con nected up to a second set of jacks by a connecting rod or tie, as indicated at m, Fig. 3. The healds may be pulled down by springs, as is usual, or extensions from the jacks may be connected with a second set of jacks arranged below. By this latter arrangement better results are accomplished when workin gpositively and dealing with heavy goods.

In order to obtain accurate working of the hooks, I propose to employ locking means to retain the hooks b b in position and prevent unauthorized or premature movement of the same. To this end I employ a channeled or other bar or bars at, extending across the dobby, the ends of the hooks when down dropping into suchchannel or against an adjustable cup 01. The said bar or bars'n may be provided with an inclined fac'e,upon which the hooks rest when out of action. By these means any false movement of the balks is effectually prevented. To check backward movement of the balk, transverse bars 0 may be fitted across the dobby-framing.

In order to effect a ready and reliable connection between the hooks b b and balks Z, I provide the hooks with a trunnion b and with two websor fins h h Each end of the balk is suitably formed with a hole or bearing Z to receive the said trunnion b and with slots or ways Z Z for the webs or fins b I), such slots or ways being so arranged as that in order to introduce the webs or fins it is necessary return the. hook out of a working position; The hook I) is shown as when out of a working position in Fig. 3, this part of the figure clearly showing the Way in which hook and balk is very effective andsecure so long as the hook remains in a working position. A similar arrangement of fins and slots or ways are preferably employed to connect the balks Z to the ends of the jack-levers m, the fins Z being formed on the balks and the slots 11?. on the cranked arms of the jacks, a

trunnion or bearing pin Z being used to engage a bearing m and secure an eifective connection, as above described. This form of balk and jack-lever connection is clearly shown in Fig. 3. If thought desirable, the

' healds may be connected up to the jacks by meansof a somewhat similar arrangement of fins and slots, as is indicated in Fig. 3, so that a slight turning is permissible as the jacks lift, and the healds are not strained or de- By means of the bearing or connection above described the parts are readily strung together and when connected are well sup ported, laterally. L 7

My improvements simplify the dobby and render the same more perfect in working ac* tion.

When the loom is at work, the camor tappet shaft, raises and lowers the usual connect ing-rod A, and so operates compound lever 9. As lever g is rocked it raises and lowers, through levers'and links,the card-barrels a a, which are provided with the usual lags. As one or other barrel is brought into action the pins in lags operate where set to raise one or other of the hooks in the sets I) b. When a pin or pins raise a hook or hooks, suc'h hook or hooks is orare acted upon by the re'cipro eating, griff-knife 7c. The griff-knives are worked from the compund lever g by the rods y,- dotted lines, Fig. 1. When the griff-knives act on the hook or set of hooks, the corresponding balks and connected jacks are af fected so as to raise the healds or sets of healds arranged in the looms. The raising of the healds brings about the desired shedding of the warps, as will be understood.

I declare that what I claim is 1. In combination in a loom dobby, and as a means for positively or directly actuating the hooks so as to dispense with the use of feelers or needles, the pattern cylinders of barrels a, a, links orlevers c, c, supporting same, pivotedlevers e rocked from the usual compound levers g, said levers and links being surrounded by a chain it, said levers ebeing operated to elevate or lower each patternbarrel as required which inturn work the hooks in the manner, for the purposes, and substantially as described. 2. In combination, in a, looni dobby in which the cylinders act directly on the hooks, the cylinders a, a, pivoted levers e; links cc, and conneeting-rod f, the connecting-rod f rocking the levers e, which in turn control the raising and lowering of the cylinders which operate the hooks, in the manner, and substantially as described; y k

3. In combination, in a loom-(lobby, cyli'n ceases s;

Z the trunnions engaging circular apertures Z m and the fins engaging curved recessed slots Z m so that in a working position the I 5 parts are securely connected together, in the manner and substantially as described.

In witness whereof I have hereunto set my hand in presence of two witnesses.

JOSEPH HIGI-ITON.

Witnesses RICHARD IBBERsoN, ALFRED YATES. 

